(Three defect reports from the same mechanic describe identical flaws in the same starter part number(MHB-6016) from two Piper PA-28 aircraft and a third unknown aircraft.).

“Mounting plate has stress crack identical to (the) other failures,” states the submitter. “See the attached IPC (internal parts catalog) for the (location) area of the crack. Cracks on both units were two inches long.” The third report includes “This is the fifth cracked housing in a two month period. There is a major problem....”

(Part times were not included with these reports. All three starters were condemned.)